4) It's such a shame that New Zealand and Tonga kept their respective tribal dances, the haka and the sipi tau, separate before the opening game of the Rugby World Cup. Who wants respect for other cultures and traditions when you can have this kind of charged atmosphere? Speaking of emotion, this has to be one of the most passionate renditions of an anthem ever performed, from Portugal in the 2007 World Cup. They lost 108-18 to the All Blacks. It's not all great for New Zealand, mind, as this ditty explains.

6) Check out this innovative approach to tackling from the opening round of NFL games. Yep, that's legal. So is this. The thinking is that, if you have long hair, it's your own damn fault if someone pulls it. Though not when it comes to women's football and this old favourite …